Control Channel Monitoring in a Wireless Network

Abstract

One or more wireless devices may communicate with a base station in a wireless network, such as a terrestrial network or a non-terrestrial network. The one or more wireless devices may resume control channel monitoring after a timing gap from an uplink signal transmission. One or more configuration parameters, such as radio resource control configuration parameters, may configure the one or more wireless devices to determine when and/or whether to resume the control channel monitoring after sending an uplink signal.

What is claimed is: 
     
         1 . A method comprising:
 receiving, by a wireless device, one or more configuration parameters, wherein the one or more configuration parameters is used to determine a round-trip transmission delay (RTT) between the wireless device and a base station;   receiving downlink control information (DCI), wherein the DCI indicates skipping physical downlink control channel (PDCCH) monitoring for a time duration on an active bandwidth part (BWP);   based on the RTT between the wireless device and the base station, and based on the time duration from the received DCI, skipping PDCCH monitoring on the active BWP; and   sending, during a time in which PDCCH monitoring on the active BWP is being skipped, data via an uplink grant.   
     
     
         2 . The method of  claim 1 , further comprising:
 resuming, based on the sending the data, the PDCCH monitoring.   
     
     
         3 . The method of  claim 1 , wherein sending the data comprises:
 sending at least one of:
 a scheduling request (SR) on a physical uplink shared channel (PUCCH); 
 a downlink (DL) hybrid automatic repeat request (HARQ) acknowledgement corresponding to a DL HARQ process, wherein the DL HARQ process is not feedback disabled; or 
 a transport block (TB) corresponding to an uplink (UL) HARQ process, wherein the UL HARQ process comprises a HARQ mode A process. 
   
     
     
         4 . The method of  claim 3 , wherein:
 a start of an SR prohibit timer corresponding to the SR is after the RTT from a transmission time of the SR;   a start of a DL retransmission timer corresponding to the DL HARQ process is after the RTT from a transmission time of the DL HARQ acknowledgement; and   a start of an UL retransmission timer corresponding to the UL HARQ process is after the RTT from a transmission time of the TB.   
     
     
         5 . The method of  claim 1 , wherein receiving the one or more configuration parameters comprises:
 receiving one or more predefined time durations configuring the wireless device to skip the PDCCH monitoring; and   wherein receiving the DCI comprises:
 receiving the DCI indicating skipping PDCCH monitoring for the time duration of the one or more predefined time durations. 
   
     
     
         6 . The method of  claim 1 , wherein sending the data comprises:
 sending, after skipping the PDCCH monitoring for a first time window, the data, wherein the first time window is based on:
 the time duration from the received DCI; and 
 the RTT between the wireless device and the base station. 
   
     
     
         7 . The method of  claim 6 , wherein the first time window is a minimum value of:
 a second time window; and   the RTT between the wireless device and the base station; and
 wherein the second time window is equal to a subtraction of a third time window from the time duration from the received DCI. 
   
     
     
         8 . The method of  claim 7 , wherein the third time window corresponds to a time difference between a transmission time of the data and a reception time of the DCI. 
     
     
         9 . The method of  claim 1 , further comprising:
 starting, based on the received DCI, a timer with a length equal to the time duration; and   based on the sending the data, continuing the timer to run without stopping until an expiration.   
     
     
         10 . The method of  claim 9 , further comprising:
 stopping the timer after the RTT from a transmission time of the data.   
     
     
         11 . The method of  claim 1 , wherein the one or more configuration parameters indicate a discontinuous reception (DRX) operation; and
 wherein the wireless device is configured to execute a DRX operation via the one or more configuration parameters.   
     
     
         12 . The method of  claim 11 , wherein skipping PDCCH monitoring comprises:
 starting, based on the received DCI, a timer associated with the a DRX operation; and wherein the method further comprises:   resuming, based on an expiration of the timer associated with the DRX operation, the PDCCH monitoring.   
     
     
         13 . A method comprising:
 sending, by a wireless device to a base station via a serving cell, a uplink (UL) signal;   receiving, after the sending the UL signal, downlink control information (DCI), wherein:
 the DCI indicates skipping physical downlink control channel (PDCCH) monitoring for a time duration on an active bandwidth part (BWP); and 
 the time of receiving the DCI is within a round-trip transmission delay (RTT) from the sending the UL signal; and 
   skipping, based on the DCI, PDCCH monitoring for a first time window on the active BWP, wherein the first time window is based on:
 the RTT from the sending the UL signal; and 
 the time duration from the DCI. 
   
     
     
         14 . The method of  claim 13 , wherein the first time window is a minimum value of:
 the time duration from the DCI; and   a second time window, wherein the second time window is a subtraction of a third time window from the RTT.   
     
     
         15 . The method of  claim 14 , wherein the third time window corresponds to a time difference between a receiving time of the DCI and a transmission time of the UL signal. 
     
     
         16 . The method of  claim 13 , wherein the method further comprises:
 determining, based on whether the serving cell being part of a non-terrestrial network (NTN), the first time window; and wherein
 the first time window is determined based on the time duration from the DCI if the serving cell is not part of a NTN; or 
 if the serving cell is part of a NTN, the first time window is determined based on:
 the time duration from the DCI; 
 the RTT from the sending the UL signal; and 
 a time difference between a receiving time of the DCI and a transmission time of the UL signal. 
 
   
     
     
         17 . The method of  claim 13 , further comprising:
 resuming, based on an expiration of the first time window, the PDCCH monitoring.   
     
     
         18 . A method comprising:
 sending, by a base station to a wireless device, one or more configuration parameters, wherein the one or more configuration parameters indicate:
 a set of one or more time durations associated with skipping physical downlink control channel (PDCCH) monitoring on a bandwidth part (BWP); 
   sending first downlink control information (DCI), where the first DCI indicates skipping PDCCH monitoring on the BWP for a time duration among the set of one or more time durations; and   receiving, based on the time duration from the sending the first DCI, an uplink (UL) signal from the wireless device.   
     
     
         19 . The method of  claim 18 , wherein the one or more configuration parameters further indicate:
 one or more parameters to determine a round-trip transmission delay (RTT) between the wireless device and the base station.   
     
     
         20 . The method of  claim 18 , further comprises:
 sending, based on the receiving the UL signal, second DCI to the wireless device.